Abraham Luce b1759, son of Benjamin&Eliz

I am trying to locate any information available about Abraham Luce, born in Morris County N.J. in 1759. He is the eldest son of Benjamin Luse/Luce (1730-1814), who was married in 1755 to Elizabeth(Hopkins), a Quaker lady.They resided in Tisbury Mass.,Southhold N.Y., Roxbury N.J. and Albermarle Va.Benjamin and Elizabeth are both buried in Montgomery Co. Ohio. Siblings of Abraham were Benjamin Jr. b.1761, married Jane(Hines) Jemima b.1762, John b. 1764, married to Eliz.-Betsy(Haynes)(John died in 1824 inClark Co. OH), brothers Justice b.1765, Zephaniah b. 1767, and Elizabeth b. 1769. It is recorded, Abraham moved to, Upper Canada about 1797-1807. Nothing else is known about him. I am trying to find to where he first moved, with whom, and when. I'm absolutely positive my family are descendants of Abraham.

I am certain Abraham was the father of my GrGrGrandfather Seth. I know Abraham was a Loyalist who fled the U.S. ColoniesRecords show he was granted 200 acres of land in Burford Township, Brant County, in what is now southwestern Ontario, Canada in 1807, sometime after the birth of Seth in 1803. Seth later settled in Delaware Township about 1832 on land granted to him, being a son of a Loyalist.

My Gr.Gr.Grandfather Seth Luce, (1803-1895), married an English woman, Mary(Rigley) in Upper Canada, prior to the birth in 1831(in Ontario)of my GrGrandfather, Deforis Luce. The first census in (1852) for Delaware Township, Middlesex County, makes no mention of Abraham. He must have died before then but I cannot find any burial record for him. Seth is listed as being of Pennsylvania Dutch, (perhaps Quaker) origin. His religion was recorded in that census as Episcopal Methodist, and he is listed as being born in WV or NY, (the handwriting is poor).

I would appreciate any information anyone has that would help me establish beyond doubt whom Abraham married, and if Seth had any siblings.